New
#11
solved too. thanks a lot for help!
Sound output is controlled by right-click on the speaker icon in System Tray. Then select "Playback devices" in the popup menu. In Playback Devices you'll see all of the options available for you, to send out either digital audio or analog audio through one of the various options your hardware configuration supports.
If you want to send digital audio out via HDMI/DP cable (from your video card) to the TV (or monitor if it had speakers and if it were connected via HDMI/DP cable), you select nVidia High Definition Audio. If there were multiple digital choices available (e.g. optical S/PDIF, if your machine had that), you'd have to pick one of them. You would also push the CONFIGURE and PROPERTIES buttons to specify further options, e.g. whether or not the receiver/device you're sending digital sound to can handle multi-channel surround formats or only 2-channel stereo.
If you want to send analog audio out through the lime-green 3.5mm jack (from the VIA sound chip on the motherboard) on the back of your computer, to your powered analog computer speakers, you select VIA HD Audio. This choice also supports multi-channel surround formats fed to a multi-channel analog speaker system, as handled by the VIA HD audio chip if it supports it (which I assume it does, same as Realtek HD audio does). In this case you would use not just the lime-green jack on the back but probably at least three (if not more) of the audio output jacks as described by your hardware user manual.
Obviously you must have figured this out and selected whichever "playback device" you wanted, and now have this working properly as you imply you now do have sound.